Q:

Is it necessary to eject two units of Lantus prior to each use in order to verify that any air bubbles are removed? This is what the instructions indicate, but Is it sufficient to follow this procedure only the first time a new pen is used? I use Lantus once per day (15 units).

A:

Reference to “2 units” indicates the amount of insulin that is recommended to prime insulin pens prior to dialing up the dose. Priming is recommended not only for Lantus pens, but for all insulin pens. The purpose of priming is 1) to get air out of the tip of the pen needle; 2) to get any excess air out of the pen itself; and 3) to make sure the pen is working properly and not clogged. Priming is a very important step that should not be skipped. When priming, make sure to point the needle up to the ceiling prior to pushing the dosing button. This ensures that you get the full amount of air out of the needle tip. The air will not hurt you, but it will decrease the amount of insulin you are taking; this becomes particularly important when dosing small amounts.

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